The main purpose of calcium phosphate tablets is to supplement calcium and can be used to prevent and treat some diseases caused by calcium ion deficiency. Among elderly patients, it is more common to prevent osteoporosis, osteoporotic fractures of the spine. In infants and children, it is mainly used for osteogenesis imperfecta, rickets, etc. Calcium supplementation is important for hand-foot convulsions, for women during pregnancy and lactation, and for menopausal women. Calcium supplements should be actively monitored for calcium ions in the blood, and should not be used if hypercalcemia is present.